Screening Universal Stress-Response Terpenoids and Their Biosynthetic Genes via Volatile and Transcriptomic Profiling in Citrus

文献类型： 外文期刊

第一作者： Wen, Huan

作者： Wen, Huan;Zhang, Sining;Liu, Yuan;Hu, Zhehui;Chen, Jiajing;Xu, Juan;Wen, Huan;Zhang, Sining;Liu, Yuan;Hu, Zhehui;Chen, Jiajing;Xu, Juan;Wen, Huan;Zhang, Sining;Liu, Yuan;Hu, Zhehui;Chen, Jiajing;Xu, Juan;Zhu, Congyi;Zeng, Jiwu;Song, Zhiqing

作者机构：

关键词： citrus; volatile terpenoids; stress; huanglongbing (HLB); terpenoid biosynthetic responsegenes

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：6.1； 五年影响因子：6.3 ）

ISSN： 0021-8561

年卷期： 2023 年 72 卷 1 期

页码：

收录情况： SCI

摘要： Volatile terpenoids accumulate in citrus and play important roles in plant defense against various stressors. However, the broad-spectrum response of terpenoid biosynthesis to ubiquitous stressors in citrus has not been comparatively investigated. In this study, volatile terpenoids were profiled under six stressors: high temperature, citrus miner, citrus red mite, citrus canker, Alternaria brown spot, and huanglongbing (HLB). Significant content changes in 15 terpenoids, including beta-ocimene, were observed in more than four of the six stressors, implying their possibly universal stress-response effects. Notably, the emission of terpenoids, including beta-caryophyllene, beta-ocimene, and nerolidol glucoside, was significantly increased by HLB in HLB-tolerant "Shatian" pomelo leaves. The upregulation of CgTPS1 and CgTPS2 and their characterization in vivo identified them as mono- or sesquiterpenoid biosynthetic genes. This study provides a foundation for determining stress resistance mechanisms in citrus and biopesticide designations for future industrial applications.

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